Alien Friends

You play one alien. He only wants friends. A flying saucer drops him on Earth, and people from every era of history attack him in huge crowds, so he kills them. Their bodies burst into pixels, and the saucer collects the pixels as biomass. Each landing is a siege, and it ends in VICTORY after the final assault.Upgrades in orbit
When you die, the saucer takes you back to orbit. There you spend the biomass on one big upgrade grid. You do not pick upgrades during a fight. Then you land again.

13 eras
Buy an era's gate on the grid, and the saucer goes to the next era. The game starts in the Stone Age and ends in the post-human future.

Features
12 alien guns. With each gun, one kill leads to more kills. Your first gun is a tentacle lash. In the Wild West you get the tesla coil. You can switch guns during a fight.

Cleopatra, Napoleon, Churchill and 19 other famous people hide at the edges of the fights. They do not shoot back. They run and curse at you in comic-strip symbols. Kill one and you get a trophy.

154 kinds of enemies in 13 eras.

One upgrade grid with 203 upgrades.

Every era has 3 mini-bosses, and each one carries a relic.

72 Steam achievements.